Request -> a +wai +http-types

Was this request made over an SSL connection?
This value should not be used, and will be removed in future revisions of WAI. There is no meaningful way that a backend can indicate whether the request is actually over a secure channel, due to issues of reverse proxying.

Extra path information sent by the client. The meaning varies slightly depending on backend; in a standalone server setting, this is most likely all information after the domain name. In a CGI application, this would be the information following the path to the CGI executable itself. Do not modify this raw value- modify pathInfo instead.

The listening port that the server received this request on. It is possible for a server to listen on a non-numeric port (i.e., Unix named socket), in which case this value will be arbitrary. Like serverName, this value should not be used in URL construction.